1. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展 Spheres interaction and Natural disasters Progress in Physical Geography Professor Wang Jian 自然地理学进展

2. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展 Dust storm and Human being Dust storm conduces many harms to human being. When it comes,the visibility greatly drops, traffic accidents increase. It can also destroy buildings, crops, bury road, railway, farmland, even can kill people. Dust storm is a result of the interactions between Atmosphere and Lithosphere, human activity can induce or enhance dust storm．

3. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展 Tsunami、Mud-debris flow、Bank caving、Landslide  Tsunami ： Lithosphere movement （ earthquake ） —— hydrosphere change(sea surface undulation ） —— rebuild lithosphere （ erosion and accumulation to the coast and near seabed).  Mud-debris flow ： Onrush+fragmentized ground （ abundant clastic substance ） +steep gouge ， is the basic postulations for producing mud-rock flow.  Bank caving ： Currents erode weak bank.  Landslide ： Generally speaking ， weak slop +water’s lubrication engender landslide.  It can be said that tsunami, mud-rock flow,bank caving and landslide are all produced by interactions between lithosphere and hydrosphere.

4. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展 Landslide Mass earth, rock or other substance slide down as a whole on a slope is called landslide. The necessary conditions to forming landslide are rock has a weak or fracture surface and certain hanging surface. Earthquake, volcano eruption, water dipping and lubricating, water dynamics and artificial destroy to the foot of the slope are the factors that can inducing landslide. Landslide body Landslide drumlin Landslide terrace Landslide wall

5. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展 泯江滑坡造成的河道堵塞

6. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展 泥石流(debris flow) 泥石流的发育必须具 备三个条件： （ 1 ）流域内具备丰 富的破碎的易于搬运 的固体物质； （ 2 ）具备丰富的并 且能够在一定时间内 集中在一起的水； （ 3 ）比降比较大的 沟谷。

7. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展 Debris flow in Xizang 西藏古乡泥石流

8. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展 海啸 (tsunami) Tsunami ： Lithosphere movement （ earthquake ） —— hydrosphere change(sea surface undulation ） —— rebuild lithosphere （ erosion and accumulation to the coast and near seabed).

9. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展 Tsunami in Indonesia

10. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展 Tsunami waves

11. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展

12. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展

13. Progress in Physical Geography Professor Wang Jian 自然地理学进展 Progress in Physical Geography Professor Wang Jian 自然地理学进展 Tsunami why India and Sri Lanka (farther away from Indonesia) have bigger loss and damage than Malasia and Thailand (much close to Indonesia)?